Shotgun-shell.



W. P. BROWN.

SHOTGUN SHELL.

APPLIOATION FILED FEB. 19, 1912.

1,035,079, Patented Aug. 6, 1912.

COLUMBIA PLANOURAPH 50-. WASHINGTON D c UNI S WILLIAM 1?. BROWN, OF MINNEAPOLIS, MINNESOTA.

SHOTGUN-SHELL.

Specification of Letters Patent.

Patented A11 6, 1912.

Application filed February 19, 1912. Serial No. 678,527.

To all whom it may concern:

Be it known that I, WILLIAM P. BROWN, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Shotgun-Shells, of which the following is a specification.

In shot gun shells as usually constructed, the gas from the burning powder sometimes passes between the lining and the wall of the shell or between the base wad and the lining and through the joint formed by the lapping, longitudinal edges of the lining, causing the head of the shell to bulge sufliciently to loosen the paper cylinder and prevent the operation of the shell extractor. Then, too, it often happens that the base wad will be loosened sufficiently to be drawn into the gun barrel when the shell is fired.

The object of my present invention is to effectually prevent this bulging of the head of the shell by the pressure of the gas, and lock the paper cylinder and also firmly secure the base wad in the shell head.

My invention consists generally in providing a metallic lining between the base wad and the paper cylinder with one or more annular ribs which are forced into the paper lining by the pressure of the wad to lock both the lining and the wad securely in the shell head.

In the accompanying drawings forming part of this specification, Figure 1 is a longitudinal, sectional view, Fig. 2 is a view, partially in section, illustrating a modified construction, Fig. 3 is a similar view, showing a further modification.

In the drawing, 2 represents the cap of the shell, and 3 the cylindrical paper portion which is inserted into the shell with its ends forced out into the recess in the flange of the cap by the pressure of the base wad 4. This base wad has the usual opening 5 for the fulminating cap.

6 is a sleeve or lining fitting within the paper shell and having inwardly turned edges at one end to bear against the head of the outer cylinder or cap 2. This lining is divided longitudinally, as indicated in Fig. 1, having lapping edges and the pressure of the base wad when it is forced into the shell squeezes this lining outwardly against the walls of the paper cylinder. In this lining I provide an external rib 7 forming a continuous groove around the inner surface of the lining, the rib having preferably a rounded outer surface that is forced into the paper cylinder 3 by the pressure of the wad when it is inserted into the shell, the smooth surface of the rib preventing it from cutting the wall of the paper cylinder. I may use one or more of these ribs. In Fig. 1 I have shown two, one on each side of the center of the base wad. In Fig. 2 I have shown the rib in the center of the wad. The pressure of the wad on the lining will squeeze the grooved lapping edges together sufiiciently to form an effectual barrier to the passage of gas through the joint between the edges of the lining, and the ribs, bearing on the paper cylinder, will hold it in place and the wad being forced into the grooves in the lining will also be locked in position. In Fig. 3 I have shown two ribs, one near each end of the wad, the rib designated by numeral 8 being near the head of the shell so that it will form a groove in the surface of the wad, while the pressure of the wad on the other rib will force it outwardly into the paper cylinder.

The passage of gas between the lining and the paper shell and through the joint formed by the lapping edges of the lining will be effectually prevented and there will be no possibility of gas reaching the head of the shell to bulge it and loosen the paper cylinder or prevent the successful operation of the shell extractor. The base wad itself will also be securely locked in the head of the shell by its engagement with the annular grooves in the lining.

The size of these ribs and their shape may be modified in various ways and still be within the scope of my invention.

I claim as my invention A shot gun shell comprising a head and a cylinder or sleeve formed thereon, a paper cylinder having one end fitting within said sleeve and seated against said head, a breech wad between which and said sleeve the inner end of said cylinder is gripped, a metallic lining for the inner portion of said cylinder extending bet-ween said breech wad and said cylinder, said metallic lining being divided longitudinally and having its longitudinal edges lapping by one another and also having an annular groove forming a continuous rib extending around said lining, the outward pressure of said breech wad closing the joint between the lapping edges In witness whereof, I have hereunto set of said lining andforcing said rib into the my hand this 15th day of February, 1912. adjoining yielding surface, thereby locking WILLIAM P. BROWN. said Wad and paper cylinder in said head Witnesses: I i and preventing passage of the gas to the GENEVIEVE E. SORENSEN, rear of said paper cylinder and Wad. i EDWARD A. PAUL.

Copies of this patent may be obtained for fii re cents eachiby addrcssin g the Commissioner of Patents,' Washin'gton,'D.;C. 

